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    <title>ShellCheck: SC2151 – Only one integer 0-255 can be returned. Use stdout for other data.</title>
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    <h1>SC2151 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2151">See this page on GitHub</a>
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    <h2
id="only-one-integer-0-255-can-be-returned-use-stdout-for-other-data">Only
one integer 0-255 can be returned. Use stdout for other data.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2151.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">myfunc()</span> <span class="kw">{</span></span>
<span id="cb1-2"><a href="SC2151.html#cb1-2" aria-hidden="true" tabindex="-1"></a>  <span class="cf">return</span> <span class="ex">foo</span> bar</span>
<span id="cb1-3"><a href="SC2151.html#cb1-3" aria-hidden="true" tabindex="-1"></a><span class="kw">}</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2151.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">myfunc()</span> <span class="kw">{</span></span>
<span id="cb2-2"><a href="SC2151.html#cb2-2" aria-hidden="true" tabindex="-1"></a>  <span class="bu">echo</span> foo</span>
<span id="cb2-3"><a href="SC2151.html#cb2-3" aria-hidden="true" tabindex="-1"></a>  <span class="bu">echo</span> bar</span>
<span id="cb2-4"><a href="SC2151.html#cb2-4" aria-hidden="true" tabindex="-1"></a>  <span class="cf">return</span> <span class="dv">0</span></span>
<span id="cb2-5"><a href="SC2151.html#cb2-5" aria-hidden="true" tabindex="-1"></a><span class="kw">}</span></span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p>In bash, <code>return</code> can only be used to signal success or
failure (0 = success, 1-255 = failure).</p>
<p>To return textual or multiple values from a function, write them to
stdout and capture them with command substitution instead.</p>
<p>See <a href="SC2152.html">SC2152</a> for more information.</p>
<h3 id="exceptions">Exceptions:</h3>
<p>None</p>
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